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Record of Decision System (RODS)

ALLIED CHEMICAL & IRONTON COKE

Abstract

Site Name:  ALLIED CHEMICAL & IRONTON COKE
Address:  3330 S 3RD ST 
City & State:  IRONTON  OH  45638
County:  LAWRENCE
 
EPA ID:  OHD043730217
EPA Region:  05
 
NPL Status:  Currently on the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R05-88/078
ROD Date:  09/29/1988
Operable Unit(s):  01
 
Media:  Groundwater, Soil
 
Contaminant:  INORGANICS, CYANIDE, METALS, ORGANICS, PAHS, PHENOLS, VOCS, BENZENE
 
Abstract:  THE ALLIED CHEMICAL SITE IS LOCATED IN THE CITY OF IRONTON, LAWRENCE COUNTY, OHIO. THIS REMEDIAL ACTION ADDRESSES THE GOLDCAMP DISPOSAL AREA (GDA) OPERABLE UNIT OF THE SITE. THE OTHER OPERABLE UNIT, COMPRISED OF THE COKE PLANT, LAGOONS, AND THE TAR PLANT, IS ADDRESSED IN A SEPARATE REMEDIAL ACTION. THE GDA IS A FOUR-ACRE DISPOSAL PIT LOCATED IN A MIXED INDUSTRIAL/BUSINESS/RESIDENTIAL AREA BOUNDED BY THIRD STREET ON THE EAST AND THE OHIO RIVER ON THE SOUTHWEST. SEVERAL BUSINESSES AND INSTITUTIONS ARE WITHIN 100 FEET OF GDA. ALLIED CHEMICAL AND DYE COMPANY HAS OWNED THE PROPERTY SINCE 1955. THE GDA WAS A SAND AND GRAVEL PIT USED FOR DISPOSAL OF VARIOUS CHEMICAL WASTES FROM THREE SOURCES BETWEEN 1945 AND 1977. THE WASTES INCLUDE; ANTHRACENE RESIDUE, ANTHRACENE SALTS, PHTHALIC ANHYDRIDE RESIDUE, AND MISCELLANEOUS PROCESS WASTES FROM THE TAR PLANT; FOUNDRY SAND CONTAINING HEAVY METALS, PHENOLICS, AND OILS FROM THE DAYTON MALLEABLE IRON COMPANY; AND WASTES DISPOSED OF BY THE GOLDCAMP GRAVEL COMPANY. IN 1977, ALLIED DECIDED TO DISCONTINUE USE OF THE GDA FOR DISPOSAL OF CHEMICAL WASTES. ALLIED AND ITS CONTRACTOR, IN CONSULTATION WITH THE OHIO ENVIRONMENTAL PROTECTION AGENCY (OEPA), COMPLETED A CLOSURE PROJECT AT THE SITE IN AUGUST 1980, WHICH INVOLVED REMOVAL OF STANDING LIQUIDS AND FILLING AND CAPPING THE SITE WITH CLAY. SUBSEQUENT HYDROGEOLOGIC AND WATER QUALITY INVESTIGATIONS INDICATED THAT THERE IS GROUND WATER CONTAMINATION AT THE SITE WHICH MAY POSE A THREAT TO PUBLIC HEALTH THROUGH MIGRATION. THE VOLUME OF THE DISPOSAL AREA IS APPROXIMATELY 300,000 YD3. IN ADDITION TO THIS PRIMARY AREA OF CONTAMINATION, THERE IS A ZONE OF NONAQUEOUS-PHASE CONTAMINANTS WHICH HAVE MIGRATED THROUGH THE AQUIFER TO THE UNDERLYING IMPERMEABLE BEDROCK LAYER. THE EXTENT OF THE CONTAMINATED AREA IS UNCERTAIN, BUT THE VOLUME IS ESTIMATED TO BE 156,000 YD3. THE SURFACE OF THE GDA IS ALSO A SOURCE OF CONTAMINATION BECAUSE MANY SUBSTANCES HAVE OOZED UP THROUGH THE EXISTING CAP. THE PRIMARY CONTAMINANTS OF CONCERN AFFECTING THE SOIL AND GROUND WATER ARE VOCS INCLUDING BENZENE, OTHER ORGANICS INCLUDING PHENOLS AND PAHS, AND INORGANICS INCLUDING CYANIDE.

THE SELECTED REMEDIAL ACTION FOR THIS SITE INCLUDES; CONSTRUCTION OF A SLURRY WALL AROUND THE DISPOSAL AREA FROM GROUND SURFACE INTO THE LOW PERMEABILITY BEDROCK; INSTALLATION OF A MULTI-MEDIA RCRA CAP OVER THE SURFACE OF THE DISPOSAL AREA; EXTRACTION AND ONSITE TREATMENT OF GROUND WATER FROM INSIDE AND OUTSIDE THE CONTAINMENT SYSTEM; PROVISION OF AN ALTERNATE WATER SUPPLY FOR THE IRONTON IRON COMPANY UNTIL GROUND WATER CLEANUP LEVELS ARE MET; IMPOSITION OF DEED RESTRICTIONS TO LIMIT FUTURE USES OF THE PROPERTY; AND PREPARATION OF A SUPPLEMENTAL RI/FS TO IDENTIFY THE EXTENT AND NATURE OF THE NONAQUEOUS-PHASE CONTAMINANT LAYER WITH IMPLEMENTATION OF THE AGENCY-APPROVED REMEDY FOR THIS CONTAMINATION, IF DIFFERENT FROM THE PRESENT CONTAINMENT ALTERNATIVE. THE ESTIMATED PRESENT WORTH COST FOR THIS REMEDIAL ACTION IS $13,130,000 WITH ANNUAL O&M COSTS OF $515,000 FOR APPROXIMATELY 30 YEARS.
 
Remedy:  THIS REMEDIAL ACTION IS THE FINAL ACTION FOR THE GOLDCAMP DISPOSAL AREA OPERABLE UNIT, WHICH IS ONE OF TWO OPERABLE UNITS FOR THE SITE. THIS OPERABLE UNIT ADDRESSES A DISCRETE WASTE DISPOSAL AREA, CALLED THE GOLDCAMP DISPOSAL AREA, AND GROUND WATER CONTAMINATION ASSOCIATED WITH THE DISPOSAL AREA. THE REMEDY ADDRESSES THE PRINCIPAL THREATS POSED BY THE GOLDCAMP DISPOSAL AREA BY EXTRACTING AND TREATING CONTAMINATED GROUND WATER WHICH HAS MIGRATED FROM THE DISPOSAL AREA AND BY ISOLATING AND CONTAINING THE WASTE DISPOSAL AREA AS A FUTURE SOURCE OF GROUNDWATER CONTAMINATION. THE SECOND OPERABLE UNIT INVOLVES REMEDIATION OF THE OTHER DISCRETE PORTION OF THE SITE WHICH INCLUDES THE COKE PLANT, TAR PLANT, AND LAGOON AREAS AND SOIL, SEDIMENT, AND GROUND WATER CONTAMINATION ASSOCIATED WITH THOSE AREAS. THE MAJOR COMPONENTS OF THE GOLDCAMP DISPOSAL AREA REMEDY INCLUDE:
* CONSTRUCTION OF A LOW PERMEABILITY SLURRY WALL AROUND THE DISPOSAL AREA FROM GROUND SURFACE INTO THE LOW PERMEABILITY BEDROCK.
* INSTALLATION OF A MULTI-MEDIA RCRA-COMPLIANT CAP OVER THE SURFACE OF THE DISPOSAL AREA.
* CONTINUOUS EXTRACTION AND ON-SITE TREATMENT OF GROUND WATER WITHIN THE CONTAINMENT SYSTEM.
* EXTRACTION AND ON-SITE TREATMENT OF CONTAMINATED GROUNDWATER OUTSIDE THE CONTAINMENT SYSTEM UNTIL CLEANUP STANDARDS ARE ACHIEVED.
* MUNICIPAL WATER HOOK-UP FOR IN-PLANT POTABLE AND SANITARY USES AT IRONTON IRON LNC. UNTIL GROUND WATER CONTAMINANT LEVELS MEET SPECIFIC GROUND WATER CLEANUP STANDARDS.
* DEED RESTRICTIONS TO LIMIT FUTURE USES OF THE PROPERTY ON WHICH THE DISPOSAL AREA IS LOCATED.
* PREPARATION OF A SUPPLEMENTAL REMEDIAL INVESTIGATION AND FEASIBILITY STUDY TO IDENTIFY THE EXTENT AND NATURE OF A SECONDARY SOURCE OF GROUND WATER CONTAMINATION (NON-AQUEOUS PHASE SUBSTANCE LAYER) AND TO DEVELOP AND EVALUATE REMEDIAL ALTERNATIVES FOR THE SECONDARY SOURCE, AND IMPLEMENT THE AGENCY. APPROVED NAPS REMEDY, IF DIFFERENT FROM THE PRESENT CONTAINMENT ALTERNATIVE.
 
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